Total NMR chemical shifts in ppm: ---------------------------------------
     (adopting the Simpson convention for anisotropy and asymmetry)-----------

     Atom  1  Si  pos: (  0.470100 -0.814241  0.733333)  Total sigma:         436.56
           437.7137          0.4272          6.6369
             0.4249        437.2104          3.8255
           -11.6898         -6.7495        434.7663

     Si   1    anisotropy:     -5.29    eta:   -0.7711
     Si   1    sigma_11=    436.97    axis=( -0.499810  0.866134 -0.001607)
     Si   1    sigma_22=    439.69    axis=( -0.745378 -0.429181  0.510113)
     Si   1    sigma_33=    433.04    axis=(  0.441136  0.256158  0.860106)